A new method to simulate the daylight performance of fenestration systems and spaces is presented. This new method, named IDC (Integration of Directional Coefficients), allows the simulation of the daylight performance of fenestration systems and spaces of arbitrary complexity, under any sun, sky and ground conditions. The IDC method is based on the combination of scale model photometry and computer-based simulation.

This study (*) has been developped in real site on gymnasium situated in the center of FRANCE which was experimented during two years. This building is equipped with two interconnected energy saving systems. In this first part of the paper the authors describe rapidly the two remarkable energy saving systems of the building. Then, they present theoretical and validation studies which were necessary to simulate correctly these two components.

In this paper we elaborate on a general representation for robots in building construction, to simulate the robots' capabilities to operate within different building projects and in cooperation with human labor crews. We introduce motion rules as a way to capture the diversity in the different robot types in a uniform manner. We explore a motion language to model the behavior of robots in the real-world environment of building construction.

The simulation of temperature and pressure development in the ventilation systems of an offshore oil platform during the initial phase of afire has been carried out using the IDA solver (IDA 1991). This paper focuses on the utility shaft and its ventilation system. The simulations are part of a project for the Norwegian oil company Statoil. That project is a total analysis of the situations in case of afire, with the objectives to decide the strategies of smoke control during the early stage of the fire.

The Simulation Problem Analysis Research Kernel (SPARK) environment for simulation of nonlinear differential algebraic systems has been revised to improve modeling convenience, modeling flexibility, and solution efficiency. Solution efficiency has been enhanced by automatic decomposition of the problem into strongly connected components, characterized as separately solvable subproblems.

An overview of the principles used to develop productive interfaces is presented, and afresh approach to the design and use of Simulation Systems is suggested. The notion of "perspective" (a way of viewing the HumanComputer Interaction) is introduced and then extended with analogy. The aim is to encourage a complete exploration of the roles that users play when interacting with computer systems and to ensure that adequate user models and functionality are developed

The most effective way of establishing confidence in the ability of a simulation tool to model a particular component or system is to compare the predictions with measured data. These data can derive from experiments in test cells or monitored test buildings. In both cases, however, the performance cannot be directly translated to generalised conclusions because the conditions of the test are not representative of conditions within typical real buildings.

In this paper we present computational experiments on the efficiency of partitioning of domains on the speed of simulation runs with an object-based solver. This exercise is motivated by the emergence of object-based environments where models are encapsulated in objects and communicate with one another, thus yielding extremely modular simulations. Such an approach is convenient for the user. This article tries to determine whether it can be efficient. The case considered is the model problem in heat conduction on a square plate.

The first purpose of our work has been to allow-as far as heat transfer modes, airflow calculation and meteorological data reconstitution are concerned-the integration of diverse interchangeable physical models in a single software tool for professional use, CODYRUN. The designer's objectives, precision requested and calculation time consideration, lead us to design a structure accepting selective use of models, taldng into account multizone description and airflow patterns.

The heat conduction through the walls changes the heat load and its distribution in a room, and thus affects the air flow pattern in a buoyancy-controlled ventilated room. This paper presents a methodology of how conjugate heat transfer and air flow in a room can be handled in an efficient computational fluid dynamics (CFD) code. The wall and indoor air regions are simulated simultaneously. The standard k-e model is used for modelling the turbulence in rooms. The transport equations take the same form in both fluid (air) and solid (wall) regions.